USDA hardiness zone
Zone 10a
Rolled up from the 1,232 ZIP codes in our data that are classified zone 10a, covering 2,746 nurseries and garden centers across 335 cities we track in this zone.
Average minimum winter temperature
30°F
Frost
Frost is rare or absent across most of this zone; timing here follows temperature, not a spring/fall frost date. Any single ZIP's own exact frost status is on that ZIP's own lookup page, not approximated here.
Average frost-free growing season
346 days
Average monthly temperature
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 57.1° | 59.1° | 62.5° | 66.5° | 71.2° | 75.7° | 78.5° | 79° | 76.9° | 71.1° | 63.5° | 57.8° |
NOAA 1991–2020 Climate Normals, averaged across this zone's member ZIPs.
Crops by frost hardiness
What grows here, and when
Frost is rare or absent here, so cool-season (hardy/semi-hardy) crops typically go in during the cooler months and warm-season (tender/very-tender) crops before the hottest months arrive, rather than on a frost-relative schedule.
Planting windows and crop timing here are computed from USDA/NOAA climate data and the university extension sources cited below, not a site visit or soil test. Treat this as a starting point: local conditions vary, and a local nursery or extension office can advise on your exact site. See our full Disclaimer.
Hardy (49)
- Apple (bare-root fruit tree)
- Apricot (bare-root fruit tree)
- Asparagus
- Bachelor's Button (Cornflower)
- Bare-root rose
- Blackberry
- Blueberry
- Broccoli
- Brussels Sprouts
- Cabbage
- Calendula
- Catnip/Catmint
- Cherry (sweet/tart, bare-root fruit tree)
- Chives
- Collards
- Currant
- Deciduous shade tree (generic, e.g. maple/oak, bare-root or B&B)
- Elderberry
- Evergreen shrub (B&B/potted, e.g. arborvitae, boxwood)
- Flowering deciduous shrub (generic, e.g. lilac/forsythia)
- Garden Peas
- Garlic
- Gooseberry
- Kale
- Kohlrabi
- Larkspur
- Lavender
- Lettuce
- Mint
- Onion (bulb)
- Oregano
- Peach (bare-root fruit tree)
- Pear (bare-root fruit tree)
- Plum (bare-root fruit tree)
- Radish
- Raspberry
- Rhubarb
- Rutabaga
- Sage
- Snapdragon
- Snow Peas
- Spinach
- Strawberry
- Sweet Alyssum
- Sweet Pea
- Table/Bunch Grape
- Tarragon
- Thyme
- Turnip
Semi-hardy (16)
Tender (20)
Zone 10a means an average annual extreme minimum winter temperature of 30°F to 35°F on the 2023 USDA Plant Hardiness Zone Map (USDA/ARS with the PRISM Climate Group at Oregon State University, 1991-2020 records). Every ZIP here carries its zone matched by centroid against the map, not by its polygon boundary, through phzmapi.org's ZIP-level derivation.
Most of zone 10a's own ZIPs carry too short or too irregular a statistical frost season to plan around, per NOAA's own station data, so timing follows monthly temperature here instead, the same warm-climate calendar Los Angeles, Phoenix, and most of Florida use. Where a frost date still gets recorded in this zone, it runs a last frost around January 23 to May 27 and a first frost around October 4 to December 30 (NOAA 1991-2020 Climate Normals), a spread that behaves more like a token statistical event than a real dormant season.
We track nurseries across Arizona, California, Florida, Texas, and Virginia in zone 10a, with the most around Orlando, FL, followed by Riverside and Vista, CA.
Cities we track in zone 10a
- Orlando, FL (68)
- Riverside, CA (66)
- Vista, CA (65)
- Phoenix, AZ (60)
- Tampa, FL (57)
- Fallbrook, CA (49)
- Sarasota, FL (48)
- Oakland, CA (38)
- Ontario, CA (36)
- Bradenton, FL (34)
- Fort Pierce, FL (33)
- San Marcos, CA (33)
Nearby zones
All zones
USDA 2023 Plant Hardiness Zone Map (zone boundaries, via the phzmapi.org ZIP-level derivation) and NOAA 1991–2020 Climate Normals (frost dates, growing season, monthly temperatures).